English 18k gold Massey type III lever watch Circa 1828-1829

Gold open faced lever watch probably made in Liverpool
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A fine and very unusual English 18 carat gold open faced lever pocket watch, Chester Hallmarks for 1828-1829. Frosted gilt movement, the plate for the fusee and chain shaped and engraved to form an eagle, engraved bridges for the other -wheels, maintaining power, 6 jewels, three in screwed chatons, Massey type III lever escapement, three armed gold balance, blued steel flat balance spring, diamond endstone, index regulator. Fixed gold cuvette. Beige dial with Roman numerals, outer minute divisions, Arabic five minute numerals, subsidiary seconds and original blued steel spade hands. Engine turned case, cast and chased flower bezels, pendant and bow, engine turned band.
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Diameter: 50 mm
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Signed: No name
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Although unsigned, it is likely that, along with most other watches bearing Chester Hallmarks, this watch was almost certainly made in Liverpool by one of the famous watchmaking companies active in that city in the early 19th century, such as Tobias or Litherland. It is quite likely that this watch was specially made for an American client, Liverpool being one of the main English ports sailing to and from New York in the early 19th century.